$ git clone -n https://src.fedoraproject.org/rpms/perl-Mail-IMAPTalk.git /var/lib/mock/f45-build-24621-605/root/chroot_tmpdir/scmroot/perl-Mail-IMAPTalk
Cloning into '/var/lib/mock/f45-build-24621-605/root/chroot_tmpdir/scmroot/perl-Mail-IMAPTalk'...
$ git fetch origin a7e6aae855f3a9c3c0105bcec821a05ba0016807:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Mail-IMAPTalk
 * [new ref]         a7e6aae855f3a9c3c0105bcec821a05ba0016807 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a7e6aae Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild